Codeine works on the central nervous system to reduce the perception of pain and is sometimes prescribed when other pain relief options have not been effective enough. Although lower strength combination products containing codeine may have different pharmacy requirements, codeine itself is prescription-only in the UK. People searching buy codeine pills should therefore consider the medicine's safety, legal status and potential for dependence. Taking codeine exactly as prescribed helps reduce unnecessary risks, while prolonged use may result in tolerance or withdrawal symptoms. Anyone with ongoing pain or concerns about codeine should seek advice from a qualified healthcare professional before changing or continuing treatment.